Average Co-Inventor Count = 14.41
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. American Express Travel Related Services Company, Inc. (3 from 1,453 patents)
3 patents:
1. 7607583 - Clear contactless card
2. 7306158 - Clear contactless card
3. 7070112 - Transparent transaction device